- Air-bed
- Air-brake
- Air-commodore
- Air-cooled
- Air-cooling
- Air-hole
- Aircraftwoman
- Airgun
- Albescence
- Albino
- Album
- Alcohol
- Alderman
- Alertness
- Algebra
- Algorithm
- Alien
- Alienate
- Alienation
- All out
- All set
- All squares
- All the best
- All the time
- All there
- All-powerful
- Allay
- Allegation
- Alleged
- Allegedly
- Allegorical
- Altercate
- Altercation
- Alternate
- Altimeter
- Altogether
- Alumni
- Alveolar
- Amalgam
- Amanuensis
- Analyze
- Ami
- Amidships
- Amiss
- Ammonia
- Amnesty
- Amok
- Among muslims
- Anabolic steroid
- Anachronistic
- Anaemic
- Anagram
- Anal
- Analectic
- Analgesic
- Analogue
- Analyse
- Anandrous
- Anaphase
- Anecdotal
- Anemic
- Anemone
- Anesthetize
- Anew
- Angel
- Angiosperms
- Angler
- Anglican
- Anopheles
- Anorak
- Anorexia
- Anosmia
- Another cup of tea
- Anoxia
- Answer
- Answering
- Antagonist
- Antagonistic
- Antares
- Anteater
- Antebellum
- Antecedence
- Antenna
- Anticipatory bail
- Anticoagulant
- Antidemocrat
- Antidote
- Antifreeze
- Antigen
- Antiperspirant
- Antiphon
- Antiseptic
- Antisocial
- Ants
- Ants in ones pants
- Antsy
- Appalled
- Appalling
- Apparently
- Appeal